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Finding the Fourth Proportional to 287,798,428.65, 403,824,792.75 and 287,798,428.65

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Solution

The fourth proportional to 287,798,428.65, 403,824,792.75 and 287,798,428.65 is: 403,824,792.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,798,428.65 : 403,824,792.75 = 287,798,428.65 : x
  2. Step 2: Convert to fraction form
    287,798,428.65/403,824,792.75 = 287,798,428.65/x
  3. Step 3: Cross multiply
    287,798,428.65x = 403,824,792.75 × 287,798,428.65
  4. Step 4: Simplify right side
    287,798,428.65x = 116,220,140,803,361,904
  5. Step 5: Solve for x
    x = 116,220,140,803,361,904/287,798,428.65
  6. Step 6: Final answer
    x = 403,824,792.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.