Home / 785,421.10-1,178,143.49-299,130.16

Finding the Fourth Proportional to 785,421.10, 1,178,143.49 and 299,130.16

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Solution

The fourth proportional to 785,421.10, 1,178,143.49 and 299,130.16 is: 448,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,421.10 : 1,178,143.49 = 299,130.16 : x
  2. Step 2: Convert to fraction form
    785,421.10/1,178,143.49 = 299,130.16/x
  3. Step 3: Cross multiply
    785,421.10x = 1,178,143.49 × 299,130.16
  4. Step 4: Simplify right side
    785,421.10x = 352,418,250,666.66
  5. Step 5: Solve for x
    x = 352,418,250,666.66/785,421.10
  6. Step 6: Final answer
    x = 448,699.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.