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Finding the Fourth Proportional to 570,295.51, 787,032.65 and 315,646.63

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Solution

The fourth proportional to 570,295.51, 787,032.65 and 315,646.63 is: 435,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,295.51 : 787,032.65 = 315,646.63 : x
  2. Step 2: Convert to fraction form
    570,295.51/787,032.65 = 315,646.63/x
  3. Step 3: Cross multiply
    570,295.51x = 787,032.65 × 315,646.63
  4. Step 4: Simplify right side
    570,295.51x = 248,424,202,494.00
  5. Step 5: Solve for x
    x = 248,424,202,494.00/570,295.51
  6. Step 6: Final answer
    x = 435,606.10

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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.