Home / 1,215,838,615.95-1,678,680,925.97-770,197,445.91

Finding the Fourth Proportional to 1,215,838,615.95, 1,678,680,925.97 and 770,197,445.91

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Solution

The fourth proportional to 1,215,838,615.95, 1,678,680,925.97 and 770,197,445.91 is: 1,063,394,224.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,838,615.95 : 1,678,680,925.97 = 770,197,445.91 : x
  2. Step 2: Convert to fraction form
    1,215,838,615.95/1,678,680,925.97 = 770,197,445.91/x
  3. Step 3: Cross multiply
    1,215,838,615.95x = 1,678,680,925.97 × 770,197,445.91
  4. Step 4: Simplify right side
    1,215,838,615.95x = 1,292,915,761,676,076,800
  5. Step 5: Solve for x
    x = 1,292,915,761,676,076,800/1,215,838,615.95
  6. Step 6: Final answer
    x = 1,063,394,224.13

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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.