Home / 1,130,415.40-1,695,428.70-420,077.80

Finding the Fourth Proportional to 1,130,415.40, 1,695,428.70 and 420,077.80

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Solution

The fourth proportional to 1,130,415.40, 1,695,428.70 and 420,077.80 is: 630,044.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,415.40 : 1,695,428.70 = 420,077.80 : x
  2. Step 2: Convert to fraction form
    1,130,415.40/1,695,428.70 = 420,077.80/x
  3. Step 3: Cross multiply
    1,130,415.40x = 1,695,428.70 × 420,077.80
  4. Step 4: Simplify right side
    1,130,415.40x = 712,211,958,352.86
  5. Step 5: Solve for x
    x = 712,211,958,352.86/1,130,415.40
  6. Step 6: Final answer
    x = 630,044.46

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1.5x scale

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.