Home / 717,931.68-990,752.28-395,653.32

Finding the Fourth Proportional to 717,931.68, 990,752.28 and 395,653.32

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Solution

The fourth proportional to 717,931.68, 990,752.28 and 395,653.32 is: 546,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,931.68 : 990,752.28 = 395,653.32 : x
  2. Step 2: Convert to fraction form
    717,931.68/990,752.28 = 395,653.32/x
  3. Step 3: Cross multiply
    717,931.68x = 990,752.28 × 395,653.32
  4. Step 4: Simplify right side
    717,931.68x = 391,994,428,879.57
  5. Step 5: Solve for x
    x = 391,994,428,879.57/717,931.68
  6. Step 6: Final answer
    x = 546,005.20

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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.