Home / 3,129,690,510.72-4,319,076,454.08-1,720,044,439.68

Finding the Fourth Proportional to 3,129,690,510.72, 4,319,076,454.08 and 1,720,044,439.68

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Solution

The fourth proportional to 3,129,690,510.72, 4,319,076,454.08 and 1,720,044,439.68 is: 2,373,718,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,690,510.72 : 4,319,076,454.08 = 1,720,044,439.68 : x
  2. Step 2: Convert to fraction form
    3,129,690,510.72/4,319,076,454.08 = 1,720,044,439.68/x
  3. Step 3: Cross multiply
    3,129,690,510.72x = 4,319,076,454.08 × 1,720,044,439.68
  4. Step 4: Simplify right side
    3,129,690,510.72x = 7,429,003,439,393,115,136
  5. Step 5: Solve for x
    x = 7,429,003,439,393,115,136/3,129,690,510.72
  6. Step 6: Final answer
    x = 2,373,718,236.34

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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.