Home / 514,312,251.42-709,809,786-288,312,275.40

Finding the Fourth Proportional to 514,312,251.42, 709,809,786 and 288,312,275.40

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Solution

The fourth proportional to 514,312,251.42, 709,809,786 and 288,312,275.40 is: 397,903,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,312,251.42 : 709,809,786 = 288,312,275.40 : x
  2. Step 2: Convert to fraction form
    514,312,251.42/709,809,786 = 288,312,275.40/x
  3. Step 3: Cross multiply
    514,312,251.42x = 709,809,786 × 288,312,275.40
  4. Step 4: Simplify right side
    514,312,251.42x = 204,646,874,502,847,040
  5. Step 5: Solve for x
    x = 204,646,874,502,847,040/514,312,251.42
  6. Step 6: Final answer
    x = 397,903,946.36

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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.