Home / 2,688,975.40-4,038,128.70-1,429,263.40

Finding the Fourth Proportional to 2,688,975.40, 4,038,128.70 and 1,429,263.40

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Solution

The fourth proportional to 2,688,975.40, 4,038,128.70 and 1,429,263.40 is: 2,146,374.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688,975.40 : 4,038,128.70 = 1,429,263.40 : x
  2. Step 2: Convert to fraction form
    2,688,975.40/4,038,128.70 = 1,429,263.40/x
  3. Step 3: Cross multiply
    2,688,975.40x = 4,038,128.70 × 1,429,263.40
  4. Step 4: Simplify right side
    2,688,975.40x = 5,771,549,555,399.58
  5. Step 5: Solve for x
    x = 5,771,549,555,399.58/2,688,975.40
  6. Step 6: Final answer
    x = 2,146,374.99

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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.