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Finding the Fourth Proportional to 663,756,985.20, 927,109,870.80 and 663,756,985.20

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Solution

The fourth proportional to 663,756,985.20, 927,109,870.80 and 663,756,985.20 is: 927,109,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,756,985.20 : 927,109,870.80 = 663,756,985.20 : x
  2. Step 2: Convert to fraction form
    663,756,985.20/927,109,870.80 = 663,756,985.20/x
  3. Step 3: Cross multiply
    663,756,985.20x = 927,109,870.80 × 663,756,985.20
  4. Step 4: Simplify right side
    663,756,985.20x = 615,375,652,791,369,472
  5. Step 5: Solve for x
    x = 615,375,652,791,369,472/663,756,985.20
  6. Step 6: Final answer
    x = 927,109,870.80

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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.