Home / 651,193,257.60-976,789,886.40-392,912,931.60

Finding the Fourth Proportional to 651,193,257.60, 976,789,886.40 and 392,912,931.60

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Solution

The fourth proportional to 651,193,257.60, 976,789,886.40 and 392,912,931.60 is: 589,369,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,193,257.60 : 976,789,886.40 = 392,912,931.60 : x
  2. Step 2: Convert to fraction form
    651,193,257.60/976,789,886.40 = 392,912,931.60/x
  3. Step 3: Cross multiply
    651,193,257.60x = 976,789,886.40 × 392,912,931.60
  4. Step 4: Simplify right side
    651,193,257.60x = 383,793,377,822,654,976
  5. Step 5: Solve for x
    x = 383,793,377,822,654,976/651,193,257.60
  6. Step 6: Final answer
    x = 589,369,397.40

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Double scale
Find fourth proportional to 651,193,258.60, 976,789,887.90 and 392,912,932.60
Similar ratio
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1.5x scale

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.