Home / 942,420.42-1,300,555.71-512,700.84

Finding the Fourth Proportional to 942,420.42, 1,300,555.71 and 512,700.84

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Solution

The fourth proportional to 942,420.42, 1,300,555.71 and 512,700.84 is: 707,535.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,420.42 : 1,300,555.71 = 512,700.84 : x
  2. Step 2: Convert to fraction form
    942,420.42/1,300,555.71 = 512,700.84/x
  3. Step 3: Cross multiply
    942,420.42x = 1,300,555.71 × 512,700.84
  4. Step 4: Simplify right side
    942,420.42x = 666,796,004,983.80
  5. Step 5: Solve for x
    x = 666,796,004,983.80/942,420.42
  6. Step 6: Final answer
    x = 707,535.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.