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Finding the Fourth Proportional to 615,064.90, 922,597.35 and 490,648.90

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Solution

The fourth proportional to 615,064.90, 922,597.35 and 490,648.90 is: 735,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,064.90 : 922,597.35 = 490,648.90 : x
  2. Step 2: Convert to fraction form
    615,064.90/922,597.35 = 490,648.90/x
  3. Step 3: Cross multiply
    615,064.90x = 922,597.35 × 490,648.90
  4. Step 4: Simplify right side
    615,064.90x = 452,671,374,920.42
  5. Step 5: Solve for x
    x = 452,671,374,920.42/615,064.90
  6. Step 6: Final answer
    x = 735,973.35

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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.