Home / 478,461.43-660,139.77-284,707.23

Finding the Fourth Proportional to 478,461.43, 660,139.77 and 284,707.23

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Solution

The fourth proportional to 478,461.43, 660,139.77 and 284,707.23 is: 392,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,461.43 : 660,139.77 = 284,707.23 : x
  2. Step 2: Convert to fraction form
    478,461.43/660,139.77 = 284,707.23/x
  3. Step 3: Cross multiply
    478,461.43x = 660,139.77 × 284,707.23
  4. Step 4: Simplify right side
    478,461.43x = 187,946,562,028.84
  5. Step 5: Solve for x
    x = 187,946,562,028.84/478,461.43
  6. Step 6: Final answer
    x = 392,814.45

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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.