Home / 1,213,343.40-1,820,015.10-977,147.40

Finding the Fourth Proportional to 1,213,343.40, 1,820,015.10 and 977,147.40

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Solution

The fourth proportional to 1,213,343.40, 1,820,015.10 and 977,147.40 is: 1,465,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,343.40 : 1,820,015.10 = 977,147.40 : x
  2. Step 2: Convert to fraction form
    1,213,343.40/1,820,015.10 = 977,147.40/x
  3. Step 3: Cross multiply
    1,213,343.40x = 1,820,015.10 × 977,147.40
  4. Step 4: Simplify right side
    1,213,343.40x = 1,778,423,022,925.74
  5. Step 5: Solve for x
    x = 1,778,423,022,925.74/1,213,343.40
  6. Step 6: Final answer
    x = 1,465,721.10

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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.