Home / 920,685.48-1,270,495.98-507,141.87

Finding the Fourth Proportional to 920,685.48, 1,270,495.98 and 507,141.87

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Solution

The fourth proportional to 920,685.48, 1,270,495.98 and 507,141.87 is: 699,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,685.48 : 1,270,495.98 = 507,141.87 : x
  2. Step 2: Convert to fraction form
    920,685.48/1,270,495.98 = 507,141.87/x
  3. Step 3: Cross multiply
    920,685.48x = 1,270,495.98 × 507,141.87
  4. Step 4: Simplify right side
    920,685.48x = 644,321,707,124.68
  5. Step 5: Solve for x
    x = 644,321,707,124.68/920,685.48
  6. Step 6: Final answer
    x = 699,828.25

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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.