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Finding the Fourth Proportional to 574,936.40, 787,665.70 and 553,387.98

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Solution

The fourth proportional to 574,936.40, 787,665.70 and 553,387.98 is: 758,144.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,936.40 : 787,665.70 = 553,387.98 : x
  2. Step 2: Convert to fraction form
    574,936.40/787,665.70 = 553,387.98/x
  3. Step 3: Cross multiply
    574,936.40x = 787,665.70 × 553,387.98
  4. Step 4: Simplify right side
    574,936.40x = 435,884,730,638.29
  5. Step 5: Solve for x
    x = 435,884,730,638.29/574,936.40
  6. Step 6: Final answer
    x = 758,144.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.