Home / 912,763.60-1,369,145.40-313,671.40

Finding the Fourth Proportional to 912,763.60, 1,369,145.40 and 313,671.40

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Solution

The fourth proportional to 912,763.60, 1,369,145.40 and 313,671.40 is: 470,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,763.60 : 1,369,145.40 = 313,671.40 : x
  2. Step 2: Convert to fraction form
    912,763.60/1,369,145.40 = 313,671.40/x
  3. Step 3: Cross multiply
    912,763.60x = 1,369,145.40 × 313,671.40
  4. Step 4: Simplify right side
    912,763.60x = 429,461,754,421.56
  5. Step 5: Solve for x
    x = 429,461,754,421.56/912,763.60
  6. Step 6: Final answer
    x = 470,507.10

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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.