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Finding the Fourth Proportional to 478,526.36, 660,412.91 and 357,457.45

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Solution

The fourth proportional to 478,526.36, 660,412.91 and 357,457.45 is: 493,326.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,526.36 : 660,412.91 = 357,457.45 : x
  2. Step 2: Convert to fraction form
    478,526.36/660,412.91 = 357,457.45/x
  3. Step 3: Cross multiply
    478,526.36x = 660,412.91 × 357,457.45
  4. Step 4: Simplify right side
    478,526.36x = 236,069,513,793.91
  5. Step 5: Solve for x
    x = 236,069,513,793.91/478,526.36
  6. Step 6: Final answer
    x = 493,326.04

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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.