Home / 915,048.45-1,262,813.40-527,719.86

Finding the Fourth Proportional to 915,048.45, 1,262,813.40 and 527,719.86

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Solution

The fourth proportional to 915,048.45, 1,262,813.40 and 527,719.86 is: 728,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,048.45 : 1,262,813.40 = 527,719.86 : x
  2. Step 2: Convert to fraction form
    915,048.45/1,262,813.40 = 527,719.86/x
  3. Step 3: Cross multiply
    915,048.45x = 1,262,813.40 × 527,719.86
  4. Step 4: Simplify right side
    915,048.45x = 666,411,710,654.12
  5. Step 5: Solve for x
    x = 666,411,710,654.12/915,048.45
  6. Step 6: Final answer
    x = 728,280.25

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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.