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Finding the Fourth Proportional to 977,893.50, 1,349,497.89 and 570,278.01

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Solution

The fourth proportional to 977,893.50, 1,349,497.89 and 570,278.01 is: 786,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,893.50 : 1,349,497.89 = 570,278.01 : x
  2. Step 2: Convert to fraction form
    977,893.50/1,349,497.89 = 570,278.01/x
  3. Step 3: Cross multiply
    977,893.50x = 1,349,497.89 × 570,278.01
  4. Step 4: Simplify right side
    977,893.50x = 769,588,971,208.40
  5. Step 5: Solve for x
    x = 769,588,971,208.40/977,893.50
  6. Step 6: Final answer
    x = 786,986.49

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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.