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Finding the Fourth Proportional to 630,433.20, 945,649.80 and 555,637.80

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Solution

The fourth proportional to 630,433.20, 945,649.80 and 555,637.80 is: 833,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,433.20 : 945,649.80 = 555,637.80 : x
  2. Step 2: Convert to fraction form
    630,433.20/945,649.80 = 555,637.80/x
  3. Step 3: Cross multiply
    630,433.20x = 945,649.80 × 555,637.80
  4. Step 4: Simplify right side
    630,433.20x = 525,438,774,442.44
  5. Step 5: Solve for x
    x = 525,438,774,442.44/630,433.20
  6. Step 6: Final answer
    x = 833,456.70

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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.