Home / 558,017.06-770,029.08-312,988.30

Finding the Fourth Proportional to 558,017.06, 770,029.08 and 312,988.30

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Solution

The fourth proportional to 558,017.06, 770,029.08 and 312,988.30 is: 431,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,017.06 : 770,029.08 = 312,988.30 : x
  2. Step 2: Convert to fraction form
    558,017.06/770,029.08 = 312,988.30/x
  3. Step 3: Cross multiply
    558,017.06x = 770,029.08 × 312,988.30
  4. Step 4: Simplify right side
    558,017.06x = 241,010,092,699.76
  5. Step 5: Solve for x
    x = 241,010,092,699.76/558,017.06
  6. Step 6: Final answer
    x = 431,904.52

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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.