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Finding the Fourth Proportional to 478,410.84, 660,878.46 and 453,216.60

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Solution

The fourth proportional to 478,410.84, 660,878.46 and 453,216.60 is: 626,075.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,410.84 : 660,878.46 = 453,216.60 : x
  2. Step 2: Convert to fraction form
    478,410.84/660,878.46 = 453,216.60/x
  3. Step 3: Cross multiply
    478,410.84x = 660,878.46 × 453,216.60
  4. Step 4: Simplify right side
    478,410.84x = 299,521,088,654.44
  5. Step 5: Solve for x
    x = 299,521,088,654.44/478,410.84
  6. Step 6: Final answer
    x = 626,075.05

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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.