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Finding the Fourth Proportional to 570,728.80, 787,605.42 and 316,079.74

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Solution

The fourth proportional to 570,728.80, 787,605.42 and 316,079.74 is: 436,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,728.80 : 787,605.42 = 316,079.74 : x
  2. Step 2: Convert to fraction form
    570,728.80/787,605.42 = 316,079.74/x
  3. Step 3: Cross multiply
    570,728.80x = 787,605.42 × 316,079.74
  4. Step 4: Simplify right side
    570,728.80x = 248,946,116,376.19
  5. Step 5: Solve for x
    x = 248,946,116,376.19/570,728.80
  6. Step 6: Final answer
    x = 436,189.86

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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.