Home / 818,430.17-1,129,490.42-496,153.85

Finding the Fourth Proportional to 818,430.17, 1,129,490.42 and 496,153.85

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Solution

The fourth proportional to 818,430.17, 1,129,490.42 and 496,153.85 is: 684,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,430.17 : 1,129,490.42 = 496,153.85 : x
  2. Step 2: Convert to fraction form
    818,430.17/1,129,490.42 = 496,153.85/x
  3. Step 3: Cross multiply
    818,430.17x = 1,129,490.42 × 496,153.85
  4. Step 4: Simplify right side
    818,430.17x = 560,401,020,421.12
  5. Step 5: Solve for x
    x = 560,401,020,421.12/818,430.17
  6. Step 6: Final answer
    x = 684,726.74

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Double scale
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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.