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Finding the Fourth Proportional to 560,030.58, 772,840.74 and 305,381.76

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Solution

The fourth proportional to 560,030.58, 772,840.74 and 305,381.76 is: 421,426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,030.58 : 772,840.74 = 305,381.76 : x
  2. Step 2: Convert to fraction form
    560,030.58/772,840.74 = 305,381.76/x
  3. Step 3: Cross multiply
    560,030.58x = 772,840.74 × 305,381.76
  4. Step 4: Simplify right side
    560,030.58x = 236,011,465,380.90
  5. Step 5: Solve for x
    x = 236,011,465,380.90/560,030.58
  6. Step 6: Final answer
    x = 421,426.03

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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.