Home / 917,320.96-1,265,944.95-509,424.61

Finding the Fourth Proportional to 917,320.96, 1,265,944.95 and 509,424.61

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Solution

The fourth proportional to 917,320.96, 1,265,944.95 and 509,424.61 is: 703,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,320.96 : 1,265,944.95 = 509,424.61 : x
  2. Step 2: Convert to fraction form
    917,320.96/1,265,944.95 = 509,424.61/x
  3. Step 3: Cross multiply
    917,320.96x = 1,265,944.95 × 509,424.61
  4. Step 4: Simplify right side
    917,320.96x = 644,903,514,314.35
  5. Step 5: Solve for x
    x = 644,903,514,314.35/917,320.96
  6. Step 6: Final answer
    x = 703,029.30

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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.