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Finding the Fourth Proportional to 630,437.70, 945,656.55 and 555,642.30

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Solution

The fourth proportional to 630,437.70, 945,656.55 and 555,642.30 is: 833,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,437.70 : 945,656.55 = 555,642.30 : x
  2. Step 2: Convert to fraction form
    630,437.70/945,656.55 = 555,642.30/x
  3. Step 3: Cross multiply
    630,437.70x = 945,656.55 × 555,642.30
  4. Step 4: Simplify right side
    630,437.70x = 525,446,780,452.07
  5. Step 5: Solve for x
    x = 525,446,780,452.07/630,437.70
  6. Step 6: Final answer
    x = 833,463.45

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Double scale
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Similar ratio
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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.