Home / 918,560.20-1,378,877.10-709,126.60

Finding the Fourth Proportional to 918,560.20, 1,378,877.10 and 709,126.60

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Solution

The fourth proportional to 918,560.20, 1,378,877.10 and 709,126.60 is: 1,064,490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,560.20 : 1,378,877.10 = 709,126.60 : x
  2. Step 2: Convert to fraction form
    918,560.20/1,378,877.10 = 709,126.60/x
  3. Step 3: Cross multiply
    918,560.20x = 1,378,877.10 × 709,126.60
  4. Step 4: Simplify right side
    918,560.20x = 977,798,429,740.86
  5. Step 5: Solve for x
    x = 977,798,429,740.86/918,560.20
  6. Step 6: Final answer
    x = 1,064,490.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.