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Finding the Fourth Proportional to 565,518.06, 780,417.45 and 310,885.65

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Solution

The fourth proportional to 565,518.06, 780,417.45 and 310,885.65 is: 429,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,518.06 : 780,417.45 = 310,885.65 : x
  2. Step 2: Convert to fraction form
    565,518.06/780,417.45 = 310,885.65/x
  3. Step 3: Cross multiply
    565,518.06x = 780,417.45 × 310,885.65
  4. Step 4: Simplify right side
    565,518.06x = 242,620,586,214.59
  5. Step 5: Solve for x
    x = 242,620,586,214.59/565,518.06
  6. Step 6: Final answer
    x = 429,023.59

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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.