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Finding the Fourth Proportional to 560,000.16, 772,803.72 and 305,355.60

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Solution

The fourth proportional to 560,000.16, 772,803.72 and 305,355.60 is: 421,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,000.16 : 772,803.72 = 305,355.60 : x
  2. Step 2: Convert to fraction form
    560,000.16/772,803.72 = 305,355.60/x
  3. Step 3: Cross multiply
    560,000.16x = 772,803.72 × 305,355.60
  4. Step 4: Simplify right side
    560,000.16x = 235,979,943,602.83
  5. Step 5: Solve for x
    x = 235,979,943,602.83/560,000.16
  6. Step 6: Final answer
    x = 421,392.64

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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.