Home / 765,532.20-1,056,426.12-421,360.68

Finding the Fourth Proportional to 765,532.20, 1,056,426.12 and 421,360.68

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Solution

The fourth proportional to 765,532.20, 1,056,426.12 and 421,360.68 is: 581,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,532.20 : 1,056,426.12 = 421,360.68 : x
  2. Step 2: Convert to fraction form
    765,532.20/1,056,426.12 = 421,360.68/x
  3. Step 3: Cross multiply
    765,532.20x = 1,056,426.12 × 421,360.68
  4. Step 4: Simplify right side
    765,532.20x = 445,136,428,292.96
  5. Step 5: Solve for x
    x = 445,136,428,292.96/765,532.20
  6. Step 6: Final answer
    x = 581,473.16

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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.