Home / 513,123.20-708,111.06-286,768.70

Finding the Fourth Proportional to 513,123.20, 708,111.06 and 286,768.70

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Solution

The fourth proportional to 513,123.20, 708,111.06 and 286,768.70 is: 395,741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,123.20 : 708,111.06 = 286,768.70 : x
  2. Step 2: Convert to fraction form
    513,123.20/708,111.06 = 286,768.70/x
  3. Step 3: Cross multiply
    513,123.20x = 708,111.06 × 286,768.70
  4. Step 4: Simplify right side
    513,123.20x = 203,064,088,131.82
  5. Step 5: Solve for x
    x = 203,064,088,131.82/513,123.20
  6. Step 6: Final answer
    x = 395,741.39

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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.