Home / 477,315.18-658,083.49-390,956.02

Finding the Fourth Proportional to 477,315.18, 658,083.49 and 390,956.02

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Solution

The fourth proportional to 477,315.18, 658,083.49 and 390,956.02 is: 539,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,315.18 : 658,083.49 = 390,956.02 : x
  2. Step 2: Convert to fraction form
    477,315.18/658,083.49 = 390,956.02/x
  3. Step 3: Cross multiply
    477,315.18x = 658,083.49 × 390,956.02
  4. Step 4: Simplify right side
    477,315.18x = 257,281,699,455.51
  5. Step 5: Solve for x
    x = 257,281,699,455.51/477,315.18
  6. Step 6: Final answer
    x = 539,018.47

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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.