Home / 1,421,037.80-2,130,779.10-578,637.80

Finding the Fourth Proportional to 1,421,037.80, 2,130,779.10 and 578,637.80

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Solution

The fourth proportional to 1,421,037.80, 2,130,779.10 and 578,637.80 is: 867,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,037.80 : 2,130,779.10 = 578,637.80 : x
  2. Step 2: Convert to fraction form
    1,421,037.80/2,130,779.10 = 578,637.80/x
  3. Step 3: Cross multiply
    1,421,037.80x = 2,130,779.10 × 578,637.80
  4. Step 4: Simplify right side
    1,421,037.80x = 1,232,949,330,709.98
  5. Step 5: Solve for x
    x = 1,232,949,330,709.98/1,421,037.80
  6. Step 6: Final answer
    x = 867,640.07

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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.