Home / 791,172,031.40-1,186,758,047.10-518,700,991.40

Finding the Fourth Proportional to 791,172,031.40, 1,186,758,047.10 and 518,700,991.40

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Solution

The fourth proportional to 791,172,031.40, 1,186,758,047.10 and 518,700,991.40 is: 778,051,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,172,031.40 : 1,186,758,047.10 = 518,700,991.40 : x
  2. Step 2: Convert to fraction form
    791,172,031.40/1,186,758,047.10 = 518,700,991.40/x
  3. Step 3: Cross multiply
    791,172,031.40x = 1,186,758,047.10 × 518,700,991.40
  4. Step 4: Simplify right side
    791,172,031.40x = 615,572,575,582,697,856
  5. Step 5: Solve for x
    x = 615,572,575,582,697,856/791,172,031.40
  6. Step 6: Final answer
    x = 778,051,487.10

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Double scale
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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.