Home / 1,069,631,989.20-1,604,447,983.80-921,678,814.80

Finding the Fourth Proportional to 1,069,631,989.20, 1,604,447,983.80 and 921,678,814.80

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Solution

The fourth proportional to 1,069,631,989.20, 1,604,447,983.80 and 921,678,814.80 is: 1,382,518,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,631,989.20 : 1,604,447,983.80 = 921,678,814.80 : x
  2. Step 2: Convert to fraction form
    1,069,631,989.20/1,604,447,983.80 = 921,678,814.80/x
  3. Step 3: Cross multiply
    1,069,631,989.20x = 1,604,447,983.80 × 921,678,814.80
  4. Step 4: Simplify right side
    1,069,631,989.20x = 1,478,785,716,117,033,472
  5. Step 5: Solve for x
    x = 1,478,785,716,117,033,472/1,069,631,989.20
  6. Step 6: Final answer
    x = 1,382,518,222.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.