Home / 630,424.76-869,985.18-343,944.74

Finding the Fourth Proportional to 630,424.76, 869,985.18 and 343,944.74

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Solution

The fourth proportional to 630,424.76, 869,985.18 and 343,944.74 is: 474,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,424.76 : 869,985.18 = 343,944.74 : x
  2. Step 2: Convert to fraction form
    630,424.76/869,985.18 = 343,944.74/x
  3. Step 3: Cross multiply
    630,424.76x = 869,985.18 × 343,944.74
  4. Step 4: Simplify right side
    630,424.76x = 299,226,826,538.95
  5. Step 5: Solve for x
    x = 299,226,826,538.95/630,424.76
  6. Step 6: Final answer
    x = 474,643.20

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Double scale
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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.