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Finding the Fourth Proportional to 570,602.49, 787,421.82 and 315,948.21

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Solution

The fourth proportional to 570,602.49, 787,421.82 and 315,948.21 is: 436,003.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,602.49 : 787,421.82 = 315,948.21 : x
  2. Step 2: Convert to fraction form
    570,602.49/787,421.82 = 315,948.21/x
  3. Step 3: Cross multiply
    570,602.49x = 787,421.82 × 315,948.21
  4. Step 4: Simplify right side
    570,602.49x = 248,784,514,543.94
  5. Step 5: Solve for x
    x = 248,784,514,543.94/570,602.49
  6. Step 6: Final answer
    x = 436,003.21

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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.