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Finding the Fourth Proportional to 570,880.50, 787,815.09 and 316,248.18

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Solution

The fourth proportional to 570,880.50, 787,815.09 and 316,248.18 is: 436,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,880.50 : 787,815.09 = 316,248.18 : x
  2. Step 2: Convert to fraction form
    570,880.50/787,815.09 = 316,248.18/x
  3. Step 3: Cross multiply
    570,880.50x = 787,815.09 × 316,248.18
  4. Step 4: Simplify right side
    570,880.50x = 249,145,088,389.04
  5. Step 5: Solve for x
    x = 249,145,088,389.04/570,880.50
  6. Step 6: Final answer
    x = 436,422.49

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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.