Home / 920,538.64-1,270,333.07-512,631.55

Finding the Fourth Proportional to 920,538.64, 1,270,333.07 and 512,631.55

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Solution

The fourth proportional to 920,538.64, 1,270,333.07 and 512,631.55 is: 707,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,538.64 : 1,270,333.07 = 512,631.55 : x
  2. Step 2: Convert to fraction form
    920,538.64/1,270,333.07 = 512,631.55/x
  3. Step 3: Cross multiply
    920,538.64x = 1,270,333.07 × 512,631.55
  4. Step 4: Simplify right side
    920,538.64x = 651,212,804,338.69
  5. Step 5: Solve for x
    x = 651,212,804,338.69/920,538.64
  6. Step 6: Final answer
    x = 707,425.83

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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.