Home / 977,128.40-1,465,692.60-939,803.60

Finding the Fourth Proportional to 977,128.40, 1,465,692.60 and 939,803.60

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Solution

The fourth proportional to 977,128.40, 1,465,692.60 and 939,803.60 is: 1,409,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,128.40 : 1,465,692.60 = 939,803.60 : x
  2. Step 2: Convert to fraction form
    977,128.40/1,465,692.60 = 939,803.60/x
  3. Step 3: Cross multiply
    977,128.40x = 1,465,692.60 × 939,803.60
  4. Step 4: Simplify right side
    977,128.40x = 1,377,463,181,973.36
  5. Step 5: Solve for x
    x = 1,377,463,181,973.36/977,128.40
  6. Step 6: Final answer
    x = 1,409,705.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.