Home / 705,885.80-1,058,828.70-407,287.40

Finding the Fourth Proportional to 705,885.80, 1,058,828.70 and 407,287.40

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Solution

The fourth proportional to 705,885.80, 1,058,828.70 and 407,287.40 is: 610,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,885.80 : 1,058,828.70 = 407,287.40 : x
  2. Step 2: Convert to fraction form
    705,885.80/1,058,828.70 = 407,287.40/x
  3. Step 3: Cross multiply
    705,885.80x = 1,058,828.70 × 407,287.40
  4. Step 4: Simplify right side
    705,885.80x = 431,247,588,268.38
  5. Step 5: Solve for x
    x = 431,247,588,268.38/705,885.80
  6. Step 6: Final answer
    x = 610,931.10

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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.