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Finding the Fourth Proportional to 607,408.80, 910,594.80 and 429,355.68

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Solution

The fourth proportional to 607,408.80, 910,594.80 and 429,355.68 is: 643,667.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,408.80 : 910,594.80 = 429,355.68 : x
  2. Step 2: Convert to fraction form
    607,408.80/910,594.80 = 429,355.68/x
  3. Step 3: Cross multiply
    607,408.80x = 910,594.80 × 429,355.68
  4. Step 4: Simplify right side
    607,408.80x = 390,969,049,558.46
  5. Step 5: Solve for x
    x = 390,969,049,558.46/607,408.80
  6. Step 6: Final answer
    x = 643,667.08

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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.