Home / 489,721.80-734,582.70-470,368.20

Finding the Fourth Proportional to 489,721.80, 734,582.70 and 470,368.20

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Solution

The fourth proportional to 489,721.80, 734,582.70 and 470,368.20 is: 705,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,721.80 : 734,582.70 = 470,368.20 : x
  2. Step 2: Convert to fraction form
    489,721.80/734,582.70 = 470,368.20/x
  3. Step 3: Cross multiply
    489,721.80x = 734,582.70 × 470,368.20
  4. Step 4: Simplify right side
    489,721.80x = 345,524,342,350.14
  5. Step 5: Solve for x
    x = 345,524,342,350.14/489,721.80
  6. Step 6: Final answer
    x = 705,552.30

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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.