Home / 839,421.36-1,158,401.64-457,448.20

Finding the Fourth Proportional to 839,421.36, 1,158,401.64 and 457,448.20

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Solution

The fourth proportional to 839,421.36, 1,158,401.64 and 457,448.20 is: 631,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,421.36 : 1,158,401.64 = 457,448.20 : x
  2. Step 2: Convert to fraction form
    839,421.36/1,158,401.64 = 457,448.20/x
  3. Step 3: Cross multiply
    839,421.36x = 1,158,401.64 × 457,448.20
  4. Step 4: Simplify right side
    839,421.36x = 529,908,745,095.05
  5. Step 5: Solve for x
    x = 529,908,745,095.05/839,421.36
  6. Step 6: Final answer
    x = 631,278.60

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.