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Finding the Fourth Proportional to 553,689.70, 777,265.10 and 553,689.70

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Solution

The fourth proportional to 553,689.70, 777,265.10 and 553,689.70 is: 777,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,689.70 : 777,265.10 = 553,689.70 : x
  2. Step 2: Convert to fraction form
    553,689.70/777,265.10 = 553,689.70/x
  3. Step 3: Cross multiply
    553,689.70x = 777,265.10 × 553,689.70
  4. Step 4: Simplify right side
    553,689.70x = 430,363,680,039.47
  5. Step 5: Solve for x
    x = 430,363,680,039.47/553,689.70
  6. Step 6: Final answer
    x = 777,265.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.