Home / 386,631.20-579,946.80-358,637.60

Finding the Fourth Proportional to 386,631.20, 579,946.80 and 358,637.60

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Solution

The fourth proportional to 386,631.20, 579,946.80 and 358,637.60 is: 537,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,631.20 : 579,946.80 = 358,637.60 : x
  2. Step 2: Convert to fraction form
    386,631.20/579,946.80 = 358,637.60/x
  3. Step 3: Cross multiply
    386,631.20x = 579,946.80 × 358,637.60
  4. Step 4: Simplify right side
    386,631.20x = 207,990,728,479.68
  5. Step 5: Solve for x
    x = 207,990,728,479.68/386,631.20
  6. Step 6: Final answer
    x = 537,956.40

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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.