Home / 648,719.40-973,079.10-470,389.80

Finding the Fourth Proportional to 648,719.40, 973,079.10 and 470,389.80

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Solution

The fourth proportional to 648,719.40, 973,079.10 and 470,389.80 is: 705,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,719.40 : 973,079.10 = 470,389.80 : x
  2. Step 2: Convert to fraction form
    648,719.40/973,079.10 = 470,389.80/x
  3. Step 3: Cross multiply
    648,719.40x = 973,079.10 × 470,389.80
  4. Step 4: Simplify right side
    648,719.40x = 457,726,483,233.18
  5. Step 5: Solve for x
    x = 457,726,483,233.18/648,719.40
  6. Step 6: Final answer
    x = 705,584.70

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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.