Home / 688,076,398.78-949,514,799.69-401,994,441.56

Finding the Fourth Proportional to 688,076,398.78, 949,514,799.69 and 401,994,441.56

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Solution

The fourth proportional to 688,076,398.78, 949,514,799.69 and 401,994,441.56 is: 554,734,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,076,398.78 : 949,514,799.69 = 401,994,441.56 : x
  2. Step 2: Convert to fraction form
    688,076,398.78/949,514,799.69 = 401,994,441.56/x
  3. Step 3: Cross multiply
    688,076,398.78x = 949,514,799.69 × 401,994,441.56
  4. Step 4: Simplify right side
    688,076,398.78x = 381,699,671,656,710,592
  5. Step 5: Solve for x
    x = 381,699,671,656,710,592/688,076,398.78
  6. Step 6: Final answer
    x = 554,734,434.05

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1.5x scale

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.