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Finding the Fourth Proportional to 570,547.28, 787,379.85 and 315,898.47

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Solution

The fourth proportional to 570,547.28, 787,379.85 and 315,898.47 is: 435,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,547.28 : 787,379.85 = 315,898.47 : x
  2. Step 2: Convert to fraction form
    570,547.28/787,379.85 = 315,898.47/x
  3. Step 3: Cross multiply
    570,547.28x = 787,379.85 × 315,898.47
  4. Step 4: Simplify right side
    570,547.28x = 248,732,089,923.83
  5. Step 5: Solve for x
    x = 248,732,089,923.83/570,547.28
  6. Step 6: Final answer
    x = 435,953.51

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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.