Home / 520,055.55-778,916.92-426,743.55

Finding the Fourth Proportional to 520,055.55, 778,916.92 and 426,743.55

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Solution

The fourth proportional to 520,055.55, 778,916.92 and 426,743.55 is: 639,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,055.55 : 778,916.92 = 426,743.55 : x
  2. Step 2: Convert to fraction form
    520,055.55/778,916.92 = 426,743.55/x
  3. Step 3: Cross multiply
    520,055.55x = 778,916.92 × 426,743.55
  4. Step 4: Simplify right side
    520,055.55x = 332,397,771,595.87
  5. Step 5: Solve for x
    x = 332,397,771,595.87/520,055.55
  6. Step 6: Final answer
    x = 639,158.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.