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Finding the Fourth Proportional to 720,705.56, 1,081,234.54 and 507,888.60

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Solution

The fourth proportional to 720,705.56, 1,081,234.54 and 507,888.60 is: 761,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,705.56 : 1,081,234.54 = 507,888.60 : x
  2. Step 2: Convert to fraction form
    720,705.56/1,081,234.54 = 507,888.60/x
  3. Step 3: Cross multiply
    720,705.56x = 1,081,234.54 × 507,888.60
  4. Step 4: Simplify right side
    720,705.56x = 549,146,696,792.24
  5. Step 5: Solve for x
    x = 549,146,696,792.24/720,705.56
  6. Step 6: Final answer
    x = 761,957.07

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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.