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Finding the Fourth Proportional to 669,390.14, 922,216.81 and 462,460.30

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Solution

The fourth proportional to 669,390.14, 922,216.81 and 462,460.30 is: 637,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,390.14 : 922,216.81 = 462,460.30 : x
  2. Step 2: Convert to fraction form
    669,390.14/922,216.81 = 462,460.30/x
  3. Step 3: Cross multiply
    669,390.14x = 922,216.81 × 462,460.30
  4. Step 4: Simplify right side
    669,390.14x = 426,488,665,210.53
  5. Step 5: Solve for x
    x = 426,488,665,210.53/669,390.14
  6. Step 6: Final answer
    x = 637,130.18

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.