Home / 639,819,077.40-959,728,616.10-155,144,885.40

Finding the Fourth Proportional to 639,819,077.40, 959,728,616.10 and 155,144,885.40

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Solution

The fourth proportional to 639,819,077.40, 959,728,616.10 and 155,144,885.40 is: 232,717,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,819,077.40 : 959,728,616.10 = 155,144,885.40 : x
  2. Step 2: Convert to fraction form
    639,819,077.40/959,728,616.10 = 155,144,885.40/x
  3. Step 3: Cross multiply
    639,819,077.40x = 959,728,616.10 × 155,144,885.40
  4. Step 4: Simplify right side
    639,819,077.40x = 148,896,986,159,935,104
  5. Step 5: Solve for x
    x = 148,896,986,159,935,104/639,819,077.40
  6. Step 6: Final answer
    x = 232,717,328.10

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Double scale
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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.