Home / 920,648.08-1,270,444.88-507,171.28

Finding the Fourth Proportional to 920,648.08, 1,270,444.88 and 507,171.28

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Solution

The fourth proportional to 920,648.08, 1,270,444.88 and 507,171.28 is: 699,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,648.08 : 1,270,444.88 = 507,171.28 : x
  2. Step 2: Convert to fraction form
    920,648.08/1,270,444.88 = 507,171.28/x
  3. Step 3: Cross multiply
    920,648.08x = 1,270,444.88 × 507,171.28
  4. Step 4: Simplify right side
    920,648.08x = 644,333,155,959.05
  5. Step 5: Solve for x
    x = 644,333,155,959.05/920,648.08
  6. Step 6: Final answer
    x = 699,869.11

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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.