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Finding the Fourth Proportional to 570,981.34, 787,920.10 and 316,314.10

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Solution

The fourth proportional to 570,981.34, 787,920.10 and 316,314.10 is: 436,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,981.34 : 787,920.10 = 316,314.10 : x
  2. Step 2: Convert to fraction form
    570,981.34/787,920.10 = 316,314.10/x
  3. Step 3: Cross multiply
    570,981.34x = 787,920.10 × 316,314.10
  4. Step 4: Simplify right side
    570,981.34x = 249,230,237,303.41
  5. Step 5: Solve for x
    x = 249,230,237,303.41/570,981.34
  6. Step 6: Final answer
    x = 436,494.54

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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.