Home / 920,700.42-1,270,562.64-512,807.10

Finding the Fourth Proportional to 920,700.42, 1,270,562.64 and 512,807.10

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Solution

The fourth proportional to 920,700.42, 1,270,562.64 and 512,807.10 is: 707,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,700.42 : 1,270,562.64 = 512,807.10 : x
  2. Step 2: Convert to fraction form
    920,700.42/1,270,562.64 = 512,807.10/x
  3. Step 3: Cross multiply
    920,700.42x = 1,270,562.64 × 512,807.10
  4. Step 4: Simplify right side
    920,700.42x = 651,553,542,786.74
  5. Step 5: Solve for x
    x = 651,553,542,786.74/920,700.42
  6. Step 6: Final answer
    x = 707,671.60

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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.