Home / 708,210.08-977,215.56-421,722.80

Finding the Fourth Proportional to 708,210.08, 977,215.56 and 421,722.80

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Solution

The fourth proportional to 708,210.08, 977,215.56 and 421,722.80 is: 581,909.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,210.08 : 977,215.56 = 421,722.80 : x
  2. Step 2: Convert to fraction form
    708,210.08/977,215.56 = 421,722.80/x
  3. Step 3: Cross multiply
    708,210.08x = 977,215.56 × 421,722.80
  4. Step 4: Simplify right side
    708,210.08x = 412,114,082,166.77
  5. Step 5: Solve for x
    x = 412,114,082,166.77/708,210.08
  6. Step 6: Final answer
    x = 581,909.37

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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.