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Finding the Fourth Proportional to 478,408.84, 660,875.70 and 453,214.60

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Solution

The fourth proportional to 478,408.84, 660,875.70 and 453,214.60 is: 626,072.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,408.84 : 660,875.70 = 453,214.60 : x
  2. Step 2: Convert to fraction form
    478,408.84/660,875.70 = 453,214.60/x
  3. Step 3: Cross multiply
    478,408.84x = 660,875.70 × 453,214.60
  4. Step 4: Simplify right side
    478,408.84x = 299,518,516,025.22
  5. Step 5: Solve for x
    x = 299,518,516,025.22/478,408.84
  6. Step 6: Final answer
    x = 626,072.29

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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.