Home / 869,130,777.68-1,304,270,516.76-409,200,478.16

Finding the Fourth Proportional to 869,130,777.68, 1,304,270,516.76 and 409,200,478.16

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Solution

The fourth proportional to 869,130,777.68, 1,304,270,516.76 and 409,200,478.16 is: 614,071,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,130,777.68 : 1,304,270,516.76 = 409,200,478.16 : x
  2. Step 2: Convert to fraction form
    869,130,777.68/1,304,270,516.76 = 409,200,478.16/x
  3. Step 3: Cross multiply
    869,130,777.68x = 1,304,270,516.76 × 409,200,478.16
  4. Step 4: Simplify right side
    869,130,777.68x = 533,708,119,108,182,336
  5. Step 5: Solve for x
    x = 533,708,119,108,182,336/869,130,777.68
  6. Step 6: Final answer
    x = 614,071,130.39

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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.