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Finding the Fourth Proportional to 648,335.80, 972,503.70 and 311,537.80

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Solution

The fourth proportional to 648,335.80, 972,503.70 and 311,537.80 is: 467,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,335.80 : 972,503.70 = 311,537.80 : x
  2. Step 2: Convert to fraction form
    648,335.80/972,503.70 = 311,537.80/x
  3. Step 3: Cross multiply
    648,335.80x = 972,503.70 × 311,537.80
  4. Step 4: Simplify right side
    648,335.80x = 302,971,663,189.86
  5. Step 5: Solve for x
    x = 302,971,663,189.86/648,335.80
  6. Step 6: Final answer
    x = 467,306.70

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1.5x scale

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.