Home / 917,486.10-1,266,130.80-515,078.10

Finding the Fourth Proportional to 917,486.10, 1,266,130.80 and 515,078.10

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Solution

The fourth proportional to 917,486.10, 1,266,130.80 and 515,078.10 is: 710,807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,486.10 : 1,266,130.80 = 515,078.10 : x
  2. Step 2: Convert to fraction form
    917,486.10/1,266,130.80 = 515,078.10/x
  3. Step 3: Cross multiply
    917,486.10x = 1,266,130.80 × 515,078.10
  4. Step 4: Simplify right side
    917,486.10x = 652,156,246,815.48
  5. Step 5: Solve for x
    x = 652,156,246,815.48/917,486.10
  6. Step 6: Final answer
    x = 710,807.77

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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.