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Finding the Fourth Proportional to 570,666.09, 787,543.97 and 316,017.28

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Solution

The fourth proportional to 570,666.09, 787,543.97 and 316,017.28 is: 436,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,666.09 : 787,543.97 = 316,017.28 : x
  2. Step 2: Convert to fraction form
    570,666.09/787,543.97 = 316,017.28/x
  3. Step 3: Cross multiply
    570,666.09x = 787,543.97 × 316,017.28
  4. Step 4: Simplify right side
    570,666.09x = 248,877,502,684.15
  5. Step 5: Solve for x
    x = 248,877,502,684.15/570,666.09
  6. Step 6: Final answer
    x = 436,117.56

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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.