Home / 665,623.08-918,640.76-375,290.55

Finding the Fourth Proportional to 665,623.08, 918,640.76 and 375,290.55

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Solution

The fourth proportional to 665,623.08, 918,640.76 and 375,290.55 is: 517,946.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,623.08 : 918,640.76 = 375,290.55 : x
  2. Step 2: Convert to fraction form
    665,623.08/918,640.76 = 375,290.55/x
  3. Step 3: Cross multiply
    665,623.08x = 918,640.76 × 375,290.55
  4. Step 4: Simplify right side
    665,623.08x = 344,757,194,196.37
  5. Step 5: Solve for x
    x = 344,757,194,196.37/665,623.08
  6. Step 6: Final answer
    x = 517,946.57

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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.