Home / 764,328.30-1,146,492.45-314,899.80

Finding the Fourth Proportional to 764,328.30, 1,146,492.45 and 314,899.80

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Solution

The fourth proportional to 764,328.30, 1,146,492.45 and 314,899.80 is: 472,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,328.30 : 1,146,492.45 = 314,899.80 : x
  2. Step 2: Convert to fraction form
    764,328.30/1,146,492.45 = 314,899.80/x
  3. Step 3: Cross multiply
    764,328.30x = 1,146,492.45 × 314,899.80
  4. Step 4: Simplify right side
    764,328.30x = 361,030,243,206.51
  5. Step 5: Solve for x
    x = 361,030,243,206.51/764,328.30
  6. Step 6: Final answer
    x = 472,349.70

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Double scale
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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.