Home / 708,639.36-977,880.16-402,673.26

Finding the Fourth Proportional to 708,639.36, 977,880.16 and 402,673.26

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Solution

The fourth proportional to 708,639.36, 977,880.16 and 402,673.26 is: 555,665.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,639.36 : 977,880.16 = 402,673.26 : x
  2. Step 2: Convert to fraction form
    708,639.36/977,880.16 = 402,673.26/x
  3. Step 3: Cross multiply
    708,639.36x = 977,880.16 × 402,673.26
  4. Step 4: Simplify right side
    708,639.36x = 393,766,191,916.52
  5. Step 5: Solve for x
    x = 393,766,191,916.52/708,639.36
  6. Step 6: Final answer
    x = 555,665.14

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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.