Home / 1,121,010,736.95-1,547,041,815.02-644,701,477.71

Finding the Fourth Proportional to 1,121,010,736.95, 1,547,041,815.02 and 644,701,477.71

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Solution

The fourth proportional to 1,121,010,736.95, 1,547,041,815.02 and 644,701,477.71 is: 889,715,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,736.95 : 1,547,041,815.02 = 644,701,477.71 : x
  2. Step 2: Convert to fraction form
    1,121,010,736.95/1,547,041,815.02 = 644,701,477.71/x
  3. Step 3: Cross multiply
    1,121,010,736.95x = 1,547,041,815.02 × 644,701,477.71
  4. Step 4: Simplify right side
    1,121,010,736.95x = 997,380,144,219,331,072
  5. Step 5: Solve for x
    x = 997,380,144,219,331,072/1,121,010,736.95
  6. Step 6: Final answer
    x = 889,715,068.15

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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.