Home / 977,367.47-1,347,967.40-687,937.16

Finding the Fourth Proportional to 977,367.47, 1,347,967.40 and 687,937.16

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Solution

The fourth proportional to 977,367.47, 1,347,967.40 and 687,937.16 is: 948,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,367.47 : 1,347,967.40 = 687,937.16 : x
  2. Step 2: Convert to fraction form
    977,367.47/1,347,967.40 = 687,937.16/x
  3. Step 3: Cross multiply
    977,367.47x = 1,347,967.40 × 687,937.16
  4. Step 4: Simplify right side
    977,367.47x = 927,316,860,159.12
  5. Step 5: Solve for x
    x = 927,316,860,159.12/977,367.47
  6. Step 6: Final answer
    x = 948,790.39

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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.