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Finding the Fourth Proportional to 977,897, 1,349,502.72 and 570,281.51

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Solution

The fourth proportional to 977,897, 1,349,502.72 and 570,281.51 is: 786,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,897 : 1,349,502.72 = 570,281.51 : x
  2. Step 2: Convert to fraction form
    977,897/1,349,502.72 = 570,281.51/x
  3. Step 3: Cross multiply
    977,897x = 1,349,502.72 × 570,281.51
  4. Step 4: Simplify right side
    977,897x = 769,596,448,910.71
  5. Step 5: Solve for x
    x = 769,596,448,910.71/977,897
  6. Step 6: Final answer
    x = 786,991.32

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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.