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Finding the Fourth Proportional to 666,693.99, 920,030.70 and 360,763.69

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Solution

The fourth proportional to 666,693.99, 920,030.70 and 360,763.69 is: 497,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,693.99 : 920,030.70 = 360,763.69 : x
  2. Step 2: Convert to fraction form
    666,693.99/920,030.70 = 360,763.69/x
  3. Step 3: Cross multiply
    666,693.99x = 920,030.70 × 360,763.69
  4. Step 4: Simplify right side
    666,693.99x = 331,913,670,245.28
  5. Step 5: Solve for x
    x = 331,913,670,245.28/666,693.99
  6. Step 6: Final answer
    x = 497,850.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.