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Finding the Fourth Proportional to 570,385.71, 787,077.63 and 340,897.30

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Solution

The fourth proportional to 570,385.71, 787,077.63 and 340,897.30 is: 470,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,385.71 : 787,077.63 = 340,897.30 : x
  2. Step 2: Convert to fraction form
    570,385.71/787,077.63 = 340,897.30/x
  3. Step 3: Cross multiply
    570,385.71x = 787,077.63 × 340,897.30
  4. Step 4: Simplify right side
    570,385.71x = 268,312,636,989.71
  5. Step 5: Solve for x
    x = 268,312,636,989.71/570,385.71
  6. Step 6: Final answer
    x = 470,405.61

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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.