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Finding the Fourth Proportional to 890,406,005.10, 1,247,417,753.70 and 890,406,005.10

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Solution

The fourth proportional to 890,406,005.10, 1,247,417,753.70 and 890,406,005.10 is: 1,247,417,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,406,005.10 : 1,247,417,753.70 = 890,406,005.10 : x
  2. Step 2: Convert to fraction form
    890,406,005.10/1,247,417,753.70 = 890,406,005.10/x
  3. Step 3: Cross multiply
    890,406,005.10x = 1,247,417,753.70 × 890,406,005.10
  4. Step 4: Simplify right side
    890,406,005.10x = 1,110,708,258,762,832,768
  5. Step 5: Solve for x
    x = 1,110,708,258,762,832,768/890,406,005.10
  6. Step 6: Final answer
    x = 1,247,417,753.70

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1.5x scale

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.