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Finding the Fourth Proportional to 1,255,318,379.02, 1,732,355,298.62 and 690,868,250.11

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Solution

The fourth proportional to 1,255,318,379.02, 1,732,355,298.62 and 690,868,250.11 is: 953,406,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,318,379.02 : 1,732,355,298.62 = 690,868,250.11 : x
  2. Step 2: Convert to fraction form
    1,255,318,379.02/1,732,355,298.62 = 690,868,250.11/x
  3. Step 3: Cross multiply
    1,255,318,379.02x = 1,732,355,298.62 × 690,868,250.11
  4. Step 4: Simplify right side
    1,255,318,379.02x = 1,196,829,273,726,385,920
  5. Step 5: Solve for x
    x = 1,196,829,273,726,385,920/1,255,318,379.02
  6. Step 6: Final answer
    x = 953,406,955.34

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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.