Home / 830,431.53-1,145,995.50-448,458.30

Finding the Fourth Proportional to 830,431.53, 1,145,995.50 and 448,458.30

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Solution

The fourth proportional to 830,431.53, 1,145,995.50 and 448,458.30 is: 618,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,431.53 : 1,145,995.50 = 448,458.30 : x
  2. Step 2: Convert to fraction form
    830,431.53/1,145,995.50 = 448,458.30/x
  3. Step 3: Cross multiply
    830,431.53x = 1,145,995.50 × 448,458.30
  4. Step 4: Simplify right side
    830,431.53x = 513,931,193,737.65
  5. Step 5: Solve for x
    x = 513,931,193,737.65/830,431.53
  6. Step 6: Final answer
    x = 618,872.45

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Double scale
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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.