Home / 612,389,981.60-918,584,972.40-440,203,097.60

Finding the Fourth Proportional to 612,389,981.60, 918,584,972.40 and 440,203,097.60

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Solution

The fourth proportional to 612,389,981.60, 918,584,972.40 and 440,203,097.60 is: 660,304,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,389,981.60 : 918,584,972.40 = 440,203,097.60 : x
  2. Step 2: Convert to fraction form
    612,389,981.60/918,584,972.40 = 440,203,097.60/x
  3. Step 3: Cross multiply
    612,389,981.60x = 918,584,972.40 × 440,203,097.60
  4. Step 4: Simplify right side
    612,389,981.60x = 404,363,950,259,290,496
  5. Step 5: Solve for x
    x = 404,363,950,259,290,496/612,389,981.60
  6. Step 6: Final answer
    x = 660,304,646.40

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Double scale
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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.