Home / 917,913.61-1,376,014.38-310,279.15

Finding the Fourth Proportional to 917,913.61, 1,376,014.38 and 310,279.15

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Solution

The fourth proportional to 917,913.61, 1,376,014.38 and 310,279.15 is: 465,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,913.61 : 1,376,014.38 = 310,279.15 : x
  2. Step 2: Convert to fraction form
    917,913.61/1,376,014.38 = 310,279.15/x
  3. Step 3: Cross multiply
    917,913.61x = 1,376,014.38 × 310,279.15
  4. Step 4: Simplify right side
    917,913.61x = 426,948,572,214.18
  5. Step 5: Solve for x
    x = 426,948,572,214.18/917,913.61
  6. Step 6: Final answer
    x = 465,129.36

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1.5x scale

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.