Home / 917,258.94-1,265,774.72-509,386.68

Finding the Fourth Proportional to 917,258.94, 1,265,774.72 and 509,386.68

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Solution

The fourth proportional to 917,258.94, 1,265,774.72 and 509,386.68 is: 702,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,258.94 : 1,265,774.72 = 509,386.68 : x
  2. Step 2: Convert to fraction form
    917,258.94/1,265,774.72 = 509,386.68/x
  3. Step 3: Cross multiply
    917,258.94x = 1,265,774.72 × 509,386.68
  4. Step 4: Simplify right side
    917,258.94x = 644,768,779,701.80
  5. Step 5: Solve for x
    x = 644,768,779,701.80/917,258.94
  6. Step 6: Final answer
    x = 702,929.95

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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.