Home / 985,000.20-1,359,300.20-555,280.35

Finding the Fourth Proportional to 985,000.20, 1,359,300.20 and 555,280.35

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Solution

The fourth proportional to 985,000.20, 1,359,300.20 and 555,280.35 is: 766,286.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,000.20 : 1,359,300.20 = 555,280.35 : x
  2. Step 2: Convert to fraction form
    985,000.20/1,359,300.20 = 555,280.35/x
  3. Step 3: Cross multiply
    985,000.20x = 1,359,300.20 × 555,280.35
  4. Step 4: Simplify right side
    985,000.20x = 754,792,688,034.67
  5. Step 5: Solve for x
    x = 754,792,688,034.67/985,000.20
  6. Step 6: Final answer
    x = 766,286.84

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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.