Home / 642,292.32-959,531.84-415,807.68

Finding the Fourth Proportional to 642,292.32, 959,531.84 and 415,807.68

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Solution

The fourth proportional to 642,292.32, 959,531.84 and 415,807.68 is: 621,182.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,292.32 : 959,531.84 = 415,807.68 : x
  2. Step 2: Convert to fraction form
    642,292.32/959,531.84 = 415,807.68/x
  3. Step 3: Cross multiply
    642,292.32x = 959,531.84 × 415,807.68
  4. Step 4: Simplify right side
    642,292.32x = 398,980,708,276.53
  5. Step 5: Solve for x
    x = 398,980,708,276.53/642,292.32
  6. Step 6: Final answer
    x = 621,182.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.