Home / 513,784.80-709,011.75-281,210.58

Finding the Fourth Proportional to 513,784.80, 709,011.75 and 281,210.58

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Solution

The fourth proportional to 513,784.80, 709,011.75 and 281,210.58 is: 388,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,784.80 : 709,011.75 = 281,210.58 : x
  2. Step 2: Convert to fraction form
    513,784.80/709,011.75 = 281,210.58/x
  3. Step 3: Cross multiply
    513,784.80x = 709,011.75 × 281,210.58
  4. Step 4: Simplify right side
    513,784.80x = 199,381,605,444.32
  5. Step 5: Solve for x
    x = 199,381,605,444.32/513,784.80
  6. Step 6: Final answer
    x = 388,064.43

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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.