Home / 565,460.20-780,342.98-307,337.06

Finding the Fourth Proportional to 565,460.20, 780,342.98 and 307,337.06

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Solution

The fourth proportional to 565,460.20, 780,342.98 and 307,337.06 is: 424,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,460.20 : 780,342.98 = 307,337.06 : x
  2. Step 2: Convert to fraction form
    565,460.20/780,342.98 = 307,337.06/x
  3. Step 3: Cross multiply
    565,460.20x = 780,342.98 × 307,337.06
  4. Step 4: Simplify right side
    565,460.20x = 239,828,315,916.49
  5. Step 5: Solve for x
    x = 239,828,315,916.49/565,460.20
  6. Step 6: Final answer
    x = 424,129.44

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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.