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Finding the Fourth Proportional to 570,547.02, 787,379.48 and 315,898.21

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Solution

The fourth proportional to 570,547.02, 787,379.48 and 315,898.21 is: 435,953.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,547.02 : 787,379.48 = 315,898.21 : x
  2. Step 2: Convert to fraction form
    570,547.02/787,379.48 = 315,898.21/x
  3. Step 3: Cross multiply
    570,547.02x = 787,379.48 × 315,898.21
  4. Step 4: Simplify right side
    570,547.02x = 248,731,768,322.73
  5. Step 5: Solve for x
    x = 248,731,768,322.73/570,547.02
  6. Step 6: Final answer
    x = 435,953.15

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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.