Home / 985,501.80-1,478,252.70-424,536.30

Finding the Fourth Proportional to 985,501.80, 1,478,252.70 and 424,536.30

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Solution

The fourth proportional to 985,501.80, 1,478,252.70 and 424,536.30 is: 636,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,501.80 : 1,478,252.70 = 424,536.30 : x
  2. Step 2: Convert to fraction form
    985,501.80/1,478,252.70 = 424,536.30/x
  3. Step 3: Cross multiply
    985,501.80x = 1,478,252.70 × 424,536.30
  4. Step 4: Simplify right side
    985,501.80x = 627,571,931,723.01
  5. Step 5: Solve for x
    x = 627,571,931,723.01/985,501.80
  6. Step 6: Final answer
    x = 636,804.45

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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.