Home / 1,038,485.70-1,557,728.55-478,613.70

Finding the Fourth Proportional to 1,038,485.70, 1,557,728.55 and 478,613.70

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Solution

The fourth proportional to 1,038,485.70, 1,557,728.55 and 478,613.70 is: 717,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,485.70 : 1,557,728.55 = 478,613.70 : x
  2. Step 2: Convert to fraction form
    1,038,485.70/1,557,728.55 = 478,613.70/x
  3. Step 3: Cross multiply
    1,038,485.70x = 1,557,728.55 × 478,613.70
  4. Step 4: Simplify right side
    1,038,485.70x = 745,550,224,911.14
  5. Step 5: Solve for x
    x = 745,550,224,911.14/1,038,485.70
  6. Step 6: Final answer
    x = 717,920.55

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Double scale
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Similar ratio
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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.