Home / 917,346.40-1,376,019.60-286,178.20

Finding the Fourth Proportional to 917,346.40, 1,376,019.60 and 286,178.20

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Solution

The fourth proportional to 917,346.40, 1,376,019.60 and 286,178.20 is: 429,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,346.40 : 1,376,019.60 = 286,178.20 : x
  2. Step 2: Convert to fraction form
    917,346.40/1,376,019.60 = 286,178.20/x
  3. Step 3: Cross multiply
    917,346.40x = 1,376,019.60 × 286,178.20
  4. Step 4: Simplify right side
    917,346.40x = 393,786,812,292.72
  5. Step 5: Solve for x
    x = 393,786,812,292.72/917,346.40
  6. Step 6: Final answer
    x = 429,267.30

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Double scale
Find fourth proportional to 917,347.40, 1,376,021.10 and 286,179.20
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.