Home / 765,522.16-1,056,412.26-421,350.74

Finding the Fourth Proportional to 765,522.16, 1,056,412.26 and 421,350.74

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Solution

The fourth proportional to 765,522.16, 1,056,412.26 and 421,350.74 is: 581,459.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,522.16 : 1,056,412.26 = 421,350.74 : x
  2. Step 2: Convert to fraction form
    765,522.16/1,056,412.26 = 421,350.74/x
  3. Step 3: Cross multiply
    765,522.16x = 1,056,412.26 × 421,350.74
  4. Step 4: Simplify right side
    765,522.16x = 445,120,087,496.07
  5. Step 5: Solve for x
    x = 445,120,087,496.07/765,522.16
  6. Step 6: Final answer
    x = 581,459.44

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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.