Home / 679,788,381.80-938,054,307.30-382,371,412.16

Finding the Fourth Proportional to 679,788,381.80, 938,054,307.30 and 382,371,412.16

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Solution

The fourth proportional to 679,788,381.80, 938,054,307.30 and 382,371,412.16 is: 527,642,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,788,381.80 : 938,054,307.30 = 382,371,412.16 : x
  2. Step 2: Convert to fraction form
    679,788,381.80/938,054,307.30 = 382,371,412.16/x
  3. Step 3: Cross multiply
    679,788,381.80x = 938,054,307.30 × 382,371,412.16
  4. Step 4: Simplify right side
    679,788,381.80x = 358,685,150,165,071,616
  5. Step 5: Solve for x
    x = 358,685,150,165,071,616/679,788,381.80
  6. Step 6: Final answer
    x = 527,642,366.02

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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.