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Finding the Fourth Proportional to 565,554.84, 780,468.12 and 310,922.40

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Solution

The fourth proportional to 565,554.84, 780,468.12 and 310,922.40 is: 429,074.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,554.84 : 780,468.12 = 310,922.40 : x
  2. Step 2: Convert to fraction form
    565,554.84/780,468.12 = 310,922.40/x
  3. Step 3: Cross multiply
    565,554.84x = 780,468.12 × 310,922.40
  4. Step 4: Simplify right side
    565,554.84x = 242,665,020,993.89
  5. Step 5: Solve for x
    x = 242,665,020,993.89/565,554.84
  6. Step 6: Final answer
    x = 429,074.25

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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.