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Finding the Fourth Proportional to 570,448.71, 856,514.12 and 318,222

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Solution

The fourth proportional to 570,448.71, 856,514.12 and 318,222 is: 477,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,448.71 : 856,514.12 = 318,222 : x
  2. Step 2: Convert to fraction form
    570,448.71/856,514.12 = 318,222/x
  3. Step 3: Cross multiply
    570,448.71x = 856,514.12 × 318,222
  4. Step 4: Simplify right side
    570,448.71x = 272,561,634,703.53
  5. Step 5: Solve for x
    x = 272,561,634,703.53/570,448.71
  6. Step 6: Final answer
    x = 477,802.18

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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.