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Finding the Fourth Proportional to 707,079.52, 975,759.60 and 389,127.52

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Solution

The fourth proportional to 707,079.52, 975,759.60 and 389,127.52 is: 536,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,079.52 : 975,759.60 = 389,127.52 : x
  2. Step 2: Convert to fraction form
    707,079.52/975,759.60 = 389,127.52/x
  3. Step 3: Cross multiply
    707,079.52x = 975,759.60 × 389,127.52
  4. Step 4: Simplify right side
    707,079.52x = 379,694,913,264.19
  5. Step 5: Solve for x
    x = 379,694,913,264.19/707,079.52
  6. Step 6: Final answer
    x = 536,990.40

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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.