Home / 900,311.61-1,242,292.05-518,264.58

Finding the Fourth Proportional to 900,311.61, 1,242,292.05 and 518,264.58

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Solution

The fourth proportional to 900,311.61, 1,242,292.05 and 518,264.58 is: 715,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,311.61 : 1,242,292.05 = 518,264.58 : x
  2. Step 2: Convert to fraction form
    900,311.61/1,242,292.05 = 518,264.58/x
  3. Step 3: Cross multiply
    900,311.61x = 1,242,292.05 × 518,264.58
  4. Step 4: Simplify right side
    900,311.61x = 643,835,967,530.59
  5. Step 5: Solve for x
    x = 643,835,967,530.59/900,311.61
  6. Step 6: Final answer
    x = 715,125.70

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1.5x scale

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.