Home / 791,164,747.76-1,091,438,960.28-512,796,389.36

Finding the Fourth Proportional to 791,164,747.76, 1,091,438,960.28 and 512,796,389.36

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Solution

The fourth proportional to 791,164,747.76, 1,091,438,960.28 and 512,796,389.36 is: 707,420,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,164,747.76 : 1,091,438,960.28 = 512,796,389.36 : x
  2. Step 2: Convert to fraction form
    791,164,747.76/1,091,438,960.28 = 512,796,389.36/x
  3. Step 3: Cross multiply
    791,164,747.76x = 1,091,438,960.28 × 512,796,389.36
  4. Step 4: Simplify right side
    791,164,747.76x = 559,685,958,038,416,448
  5. Step 5: Solve for x
    x = 559,685,958,038,416,448/791,164,747.76
  6. Step 6: Final answer
    x = 707,420,242.91

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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.