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Finding the Fourth Proportional to 570,465.63, 787,212.60 and 312,293.10

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Solution

The fourth proportional to 570,465.63, 787,212.60 and 312,293.10 is: 430,948.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,465.63 : 787,212.60 = 312,293.10 : x
  2. Step 2: Convert to fraction form
    570,465.63/787,212.60 = 312,293.10/x
  3. Step 3: Cross multiply
    570,465.63x = 787,212.60 × 312,293.10
  4. Step 4: Simplify right side
    570,465.63x = 245,841,060,565.94
  5. Step 5: Solve for x
    x = 245,841,060,565.94/570,465.63
  6. Step 6: Final answer
    x = 430,948.07

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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.