Home / 985,005.45-1,359,307.44-555,285.60

Finding the Fourth Proportional to 985,005.45, 1,359,307.44 and 555,285.60

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Solution

The fourth proportional to 985,005.45, 1,359,307.44 and 555,285.60 is: 766,294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,005.45 : 1,359,307.44 = 555,285.60 : x
  2. Step 2: Convert to fraction form
    985,005.45/1,359,307.44 = 555,285.60/x
  3. Step 3: Cross multiply
    985,005.45x = 1,359,307.44 × 555,285.60
  4. Step 4: Simplify right side
    985,005.45x = 754,803,847,404.86
  5. Step 5: Solve for x
    x = 754,803,847,404.86/985,005.45
  6. Step 6: Final answer
    x = 766,294.08

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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.