Home / 830,912,589.15-1,146,559,474.76-478,603,160.43

Finding the Fourth Proportional to 830,912,589.15, 1,146,559,474.76 and 478,603,160.43

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Solution

The fourth proportional to 830,912,589.15, 1,146,559,474.76 and 478,603,160.43 is: 660,414,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,912,589.15 : 1,146,559,474.76 = 478,603,160.43 : x
  2. Step 2: Convert to fraction form
    830,912,589.15/1,146,559,474.76 = 478,603,160.43/x
  3. Step 3: Cross multiply
    830,912,589.15x = 1,146,559,474.76 × 478,603,160.43
  4. Step 4: Simplify right side
    830,912,589.15x = 548,746,988,238,703,872
  5. Step 5: Solve for x
    x = 548,746,988,238,703,872/830,912,589.15
  6. Step 6: Final answer
    x = 660,414,820.29

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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.