Home / 978,638.91-1,350,533.03-543,065.19

Finding the Fourth Proportional to 978,638.91, 1,350,533.03 and 543,065.19

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Solution

The fourth proportional to 978,638.91, 1,350,533.03 and 543,065.19 is: 749,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,638.91 : 1,350,533.03 = 543,065.19 : x
  2. Step 2: Convert to fraction form
    978,638.91/1,350,533.03 = 543,065.19/x
  3. Step 3: Cross multiply
    978,638.91x = 1,350,533.03 × 543,065.19
  4. Step 4: Simplify right side
    978,638.91x = 733,427,473,822.90
  5. Step 5: Solve for x
    x = 733,427,473,822.90/978,638.91
  6. Step 6: Final answer
    x = 749,436.25

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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.