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Finding the Fourth Proportional to 478,302.45, 660,032.47 and 297,010.49

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Solution

The fourth proportional to 478,302.45, 660,032.47 and 297,010.49 is: 409,859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,302.45 : 660,032.47 = 297,010.49 : x
  2. Step 2: Convert to fraction form
    478,302.45/660,032.47 = 297,010.49/x
  3. Step 3: Cross multiply
    478,302.45x = 660,032.47 × 297,010.49
  4. Step 4: Simplify right side
    478,302.45x = 196,036,567,330.61
  5. Step 5: Solve for x
    x = 196,036,567,330.61/478,302.45
  6. Step 6: Final answer
    x = 409,859.01

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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.