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Finding the Fourth Proportional to 585,095.20, 807,430.80 and 316,823.20

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Solution

The fourth proportional to 585,095.20, 807,430.80 and 316,823.20 is: 437,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,095.20 : 807,430.80 = 316,823.20 : x
  2. Step 2: Convert to fraction form
    585,095.20/807,430.80 = 316,823.20/x
  3. Step 3: Cross multiply
    585,095.20x = 807,430.80 × 316,823.20
  4. Step 4: Simplify right side
    585,095.20x = 255,812,809,834.56
  5. Step 5: Solve for x
    x = 255,812,809,834.56/585,095.20
  6. Step 6: Final answer
    x = 437,215.70

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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.