Home / 1,123,298,128.54-1,685,176,999.53-386,272,314.66

Finding the Fourth Proportional to 1,123,298,128.54, 1,685,176,999.53 and 386,272,314.66

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Solution

The fourth proportional to 1,123,298,128.54, 1,685,176,999.53 and 386,272,314.66 is: 579,487,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,298,128.54 : 1,685,176,999.53 = 386,272,314.66 : x
  2. Step 2: Convert to fraction form
    1,123,298,128.54/1,685,176,999.53 = 386,272,314.66/x
  3. Step 3: Cross multiply
    1,123,298,128.54x = 1,685,176,999.53 × 386,272,314.66
  4. Step 4: Simplify right side
    1,123,298,128.54x = 650,937,220,220,246,912
  5. Step 5: Solve for x
    x = 650,937,220,220,246,912/1,123,298,128.54
  6. Step 6: Final answer
    x = 579,487,496.40

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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.